CN109341984A - A kind of anhydrous work seal detection device of gate valve and detection method - Google Patents

A kind of anhydrous work seal detection device of gate valve and detection method Download PDF

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Publication number
CN109341984A
CN109341984A CN201811334449.6A CN201811334449A CN109341984A CN 109341984 A CN109341984 A CN 109341984A CN 201811334449 A CN201811334449 A CN 201811334449A CN 109341984 A CN109341984 A CN 109341984A
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CN
China
Prior art keywords
valve
test
gate valve
detection
chamber
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201811334449.6A
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Chinese (zh)
Inventor
龙飞
邢武
高锋
郑勇
伍先达
曾威威
詹超
吴鹏
卜益军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ANHUI ZHONGKE INTELLIGENT HI-TECH Co Ltd
Original Assignee
ANHUI ZHONGKE INTELLIGENT HI-TECH Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
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Application filed by ANHUI ZHONGKE INTELLIGENT HI-TECH Co Ltd filed Critical ANHUI ZHONGKE INTELLIGENT HI-TECH Co Ltd
Priority to CN201811334449.6A priority Critical patent/CN109341984A/en
Publication of CN109341984A publication Critical patent/CN109341984A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00Investigating fluid-tightness of structures
    • G01M3/02Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/26Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
    • G01M3/28Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
    • G01M3/2876Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for valves

Abstract

A kind of anhydrous work seal detection device of gate valve and detection method, including detection gas circuit unit, block unit and detection control unit;Wherein, the detection gas circuit unit includes the gas path pipe connection of gas source, intake valve, test valve, vent valve, differential pressure transmitter, pressure transmitter, intake valve, test valve, vent valve, differential pressure transmitter, pressure transmitter are electrically connected with detection control unit, to control the folding of each valve member and the signal of acquisition differential pressure transmitter, pressure transmitter;The closure unit includes the first closure end cap and the second closure end cap for being respectively used to block two exocoels of gate valve, and blocking end cap can be opened or be closed by detection control unit control, so that gate valve ends or connection.The present invention can realize the automatic detection of anhydrous external leakage, internal leakage leakproofness to the gate valve for forming separate cavities with double disc, be suitable for valve member anhydrous sealing detection automatic production line online, improve production efficiency, improve detection accuracy and consistency.

Description

A kind of anhydrous work seal detection device of gate valve and detection method
Technical field
The present invention relates to valve seal detection technique fields, and in particular to a kind of anhydrous work seal detection device of gate valve And detection method.
Background technique
Important devices of the gate valve as connection or the truncation of the conveyance conduits such as gas, heat supply, sewage, sealing performance It is more demanding, especially for the gate valve for forming separate cavities with double disc, monoblock cast part is not required nothing more than without external leakage, is also wanted Ask the separate cavities formed in gate valve without internal leakage.Producers many for the leak detection that leaks of gate valve are using the water inspection for manually seeing bubble Method, some using pressure gauge see pressure decline, some using hydraulic measurement of discharge method, as number of patent application is 201410809793.1 " the online signal detecting equipment of gate valve ", individual large size valve member manufacturing enterprises are using conventional differential pressure air-tightness Detecting instrument detects.And for the current conventional instrument of leakage rate of internal leakage, that is, gate valve lumen to the both sides side chamber of gate valve without Method detects automatically.
Number of patent application 201711194463.6 " a kind of gate valve leak detection apparatus and pipe-line system " is examined using U-shaped pressure difference Survey lumen toward two side chambers leakage it is poor, number of patent application 2011103533841 " a kind of air-tightness detection device of gate valve ", be by Gate valve leaks through pipeline access sink and sees the method for bubble to detect the cut-off sealing performance of gate valve, is declined with pressure gauge and is determined Cavity leakproofness.Number of patent application 201810226433.7 " fixing ball valve sealing property detection device " is by three inspections of detection The pressure of mouth is surveyed to determine whether valve seat and the sealing ring on both sides on sphere, valve seat leak, the device is close in ball valve due to needing Detection hole is opened on seal attachment base, needs further to split ball valve, install, may be only available for the sizing examination to ball valve design It tests, is not applied for the sealing performance of on-line checking finished product valve member.
Summary of the invention
A kind of anhydrous work seal detection device of gate valve proposed by the present invention and detection method, can solve traditional technology without Method realizes the technical issues of automatic and on-line checking Gate-valve sealing.
To achieve the above object, the invention adopts the following technical scheme:
A kind of anhydrous work seal detection device of gate valve is based on gate valve, and the gate valve includes that double disc forms three separate cavities, A chamber, B chamber and C chamber, B chamber are located at centre, and handle is arranged on gate valve, including detect gas circuit unit, block unit and detect control and is single Member;Wherein,
The detection gas circuit unit includes gas source and intake valve, and gas source is connected with intake valve pipe, further includes the first test valve and Two test valves, first test valve one end are connect with intake valve pipe, and the other end is connected to test input channel, second test valve one end It is connect with intake valve pipe, the other end is connected to standard testing pipeline.
The delivery outlet sealing blocking of the standard testing pipeline.
The detection gas circuit unit further includes differential pressure transmitter and first pressure transmitter, differential pressure transmitter one end and test Input channel connection, the other end are connected to standard testing pipeline;First pressure transmitter is connected to test input channel.
The detection gas circuit unit further includes the first vent valve and the second vent valve, and first vent valve one end and test are defeated Enter pipeline connection, the other end is communicated with outer atmosphere;Second vent valve one end is connected to standard testing pipeline, the other end and outer atmosphere It communicates.
The detection gas circuit unit further includes that third test valve, third vent valve and second pressure transmitter, third are deflated Valve one end is communicated with third test valve, and one end is communicated with outer atmosphere;The other end of third test valve is connected with test output channel; Second pressure transmitter is connected on the pipeline between third test valve and third vent valve.
The closure unit includes the first closure end cap and second blocks end cap, and the first closure end cap is fixed in the first drive It takes offence on the output shaft of cylinder, described first, which blocks end cap, drives the A chamber for carrying out stretching motion and blocking gate valve by the first driving cylinder End face;Second closure end cap is fixed on the output shaft of the second driving cylinder, and second blocks end cap is driven by the second driving cylinder Carry out the C resonator end surface that stretching motion blocks gate valve;It is described first block cover internal setting pipeline respectively with test input channel It is connected to the A accent of gate valve, second blocks cover internal setting pipeline connects with the C accent of test output channel and gate valve respectively It connects;
The closure unit further includes the first drive magnetic valve and the second drive magnetic valve, and the first drive magnetic valve is driven with first Earthen pipe of taking offence connection, the second drive magnetic valve are connect with the second driving cylinder tube;
The closure unit further includes motor, and the delivery outlet of motor is connected on the handle of gate valve by connector, and motor is defeated Shaft rotational handle drives the B chamber of gate valve to move up and down, so that gate valve cut-off or connection;
The detection control unit and intake valve, the first test valve, the second test valve, differential pressure transmitter, first pressure transmitter, First vent valve, the second vent valve, third test valve, second pressure transmitter, third vent valve, the first drive magnetic valve, the Two drive magnetic valves and motor are electrically connected.
A kind of anhydrous work seal detection method of gate valve,
S1, the starting anhydrous work seal detection device of gate valve, control unit to be detected drive the first drive magnetic valve, second to drive Moving electromagnetic valve movement, so that the first driving cylinder, the second driving cylinder output shaft drive the first closure end cap, second to block respectively End cap movement, the A chamber and C resonator end surface of sealing blocking gate valve;
S2, close intake valve, the first vent valve, the second vent valve, third test valve, open first test valve, second test valve, Third vent valve;
S3, control unit driving motor to be detected rotate forward so that A, B, C chamber of gate valve are connected to;
S4, intake valve is opened, when detection control unit detection first pressure transmitter reaches setting pressure, closes intake valve;
S5, after balance a period of time, the first test valve, the second test valve are closed, detection control unit acquires differential pressure transmitter Signal, and calculate leakage rate, the as leakage quantity that leaks of gate valve 4;
S6, driving motor reversion, gate valve cut-off open the first vent valve, the second vent valve, third so that tri- chamber of A, B, C is isolated Valve is tested, A chamber, C chamber gas are discharged;
S7, the first vent valve, third vent valve are closed, while acquires the first differential pressure transmitter, second pressure transmitter, and calculate The leakage rate on both sides out, respectively the B chamber of gate valve are to A chamber, C chamber leakage rate;
S8, the first vent valve and third vent valve, gas of the release leakage in test input channel, test output channel are opened Body;
S9, the first vent valve and third vent valve are closed, driving motor rotates forward, so that A, B, C chamber of gate valve are connected to, acquisition first The signal of pressure transmitter calculates the B chamber residual compression of gate valve, to judge B chamber with the presence or absence of big leakage;
S10, the first test valve, the second test valve, the first vent valve, the second vent valve and the deflation of third vent valve are opened, it is to be checked It surveys control unit and drives the first drive magnetic valve, the movement of the second drive magnetic valve, so that the first driving cylinder, the second driving cylinder Output shaft terminates respectively away from the first closure end cap, the second closure end cap test.
As shown from the above technical solution, the present invention can realize without leaked water the gate valve that separate cavities are formed with double disc Leakage, the automatic detection of internal leakage leakproofness are suitable for valve member anhydrous sealing detection automatic production line online, improve production Efficiency improves detection accuracy and consistency.
In conclusion the beneficial effects of the present invention are:
1) gate valve external leakage, cut-off posterior intermediate septum can disposably be realized by blocking unit by control driving detection gas circuit unit combination The anhydrous on-line checking leaked from chamber to both sides.
2) by the way that an interface of the first differential pressure transmitter is led to atmosphere, differential pressure transmitter, which is converted to pressure transmitter, to be made With, significantly simplify detection gas circuit, saved cost.
3) pass through test input channel, the differential pressure transmitter on test output channel, pressure transmitter, control setting for valve member It sets and controls, realize to after gate valve cut-off, while detecting B chamber and leaking to A chamber and B chamber and leaking leakage rate to C chamber, be more in line with detection Code requirement, while also improving detection efficiency.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention.
In figure: 101- gas source, 102- intake valve, 103- first test valve, 104- second tests valve, 105- differential pressure transporting Device, the first vent valve of 106-, the second vent valve of 107-, 108- first pressure transmitter, 109- third test valve, 110- second are pressed Power transmitter, 111- third vent valve, 112- test input channel, 113- standard testing pipeline, 114- test output channel, 2- Detection control unit, the first drive magnetic valve of 301-, the second drive magnetic valve of 302-, 303- first drive cylinder, 304- second Cylinder, 305- first is driven to block end cap, 306- second closure end cap, 307- motor, 4- gate valve, 401- handle.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is A part of the embodiment of the present invention, instead of all the embodiments.
Fig. 1 is the structural schematic diagram of the embodiment of the present invention, and solid line is tracheae connection, and dotted line is circuit connection, and chain-dotted line is Mechanical connection.
As shown in Figure 1, the anhydrous work seal detection device of gate valve described in the present embodiment, is based on gate valve 4, the gate valve 4 include that double disc forms three separate cavities, A chamber, B chamber and C chamber, and B chamber is located at centre, handle 401, including inspection are arranged on gate valve 4 It surveys gas circuit unit, detection control unit 2, block unit.
The gas source 101 of the detection gas circuit unit, intake valve 102, first test valve 103, second and test valve 104, the Three test valves 109, differential pressure transmitter 105, the first vent valve 106, the second vent valve 107, third vent valve 111, first pressure Transmitter 108, second pressure transmitter 110 are all connected by pipeline.
The intake valve 102, first of the detection control unit 2 and detection gas circuit unit tests valve 103, second and tests valve 104, third tests valve 109, differential pressure transmitter 105, the first vent valve 106, the second vent valve 107, third vent valve 111, the One pressure transmitter 108, second pressure transmitter 110 all pass through electrical connection.First vent valve 106, the second vent valve 107, Interface one end of three vent valves 111 is connect with the pipeline of Detection & Controling unit 2, and one end is deflated.It is connected with the second test valve 104 The 113 delivery outlet sealing blocking of standard testing pipeline connect.
The closure unit includes the first drive magnetic valve 301, the second drive magnetic valve 302, first driving cylinder 303, the second driving cylinder 304, first blocks end cap 305, second and blocks end cap 306, motor 307, the first drive magnetic valve 301, the second drive magnetic valve 302, first driving cylinder 303, second drives and is all connected by pipeline between cylinder 304.First It blocks end cap 305 to be fixed on the output shaft of the first driving cylinder 303, flexible fortune can be carried out by the first driving drive of cylinder 303 The dynamic A resonator end surface for blocking gate valve 4.Second closure end cap 306 is fixed on the output shaft of the second driving cylinder 304, can be by second It drives cylinder 304 to drive and carries out the C resonator end surface that stretching motion blocks gate valve 4.There is pipeline to be connected to inside first closure end cap 305 The A accent of input channel 112 and gate valve 4 is tested, has pipeline to be connected to test output channel 114 inside the first closure end cap 306 With the C accent of gate valve 4.The delivery outlet of motor 307 is connected on the handle 401 of gate valve 4 by connector, 307 output shaft of motor The handle 401 of gate valve 4 is driven to rotate, the B chamber of gate valve 4 moves up and down, so that the cut-off of gate valve 4 or connection.
The detection control unit 2 and block the first drive magnetic valve 301 in unit, the second drive magnetic valve 302, Motor 307 passes through electrical connection.
Wherein 102 be intake valve, is mainly responsible for the on-off of the gas source supply on federation road;106,107,111 be vent valve, is It is responsible for releasing the gas in pipeline;103,104,109 pipeline on-off action is only played.
105 for differential pressure transmitter be detect pipeline both sides pressure difference, 108 and 110 for pressure transmitter be detection pipeline Pressure change.
The embodiment of the present invention provides a kind of anhydrous work seal detection of the gate valve for forming separate cavities based on double disc simultaneously Device detects and controls step:
(1) starting device, detection control unit 2 drive the first drive magnetic valve 301, the movement of the second drive magnetic valve 302, so that First driving cylinder 303, second drives 304 output shaft of cylinder that the first closure end cap 305, second is driven to block end cap 306 respectively Movement, the A chamber and C resonator end surface of sealing blocking gate valve 4.
(2) intake valve 102, the first vent valve 106, the second vent valve 107, third are closed and tests valve 109, first is opened and surveys It tries valve 103, second and tests valve 104, third vent valve 111.
(3) driving motor 307 rotates forward so that A, B, C chamber of gate valve 4 are connected to.
(4) 102 air inlets are opened, when detection control unit 2, which detects first pressure transmitter 108, reaches setting pressure, are closed Close 102.
(5) it after balancing a period of time, closes the first test valve 103, second and tests valve 104, detection control unit 2 acquires difference The signal of pressure transmitter 105, and calculate leakage rate, the as leakage quantity that leaks of gate valve 4.
(6) driving motor 307 inverts, and gate valve 4 ends, so that tri- chamber of A, B, C is isolated, opens the first vent valve 106, second Vent valve 107, third test valve 109, discharge A chamber, C chamber gas.
(7) the first vent valve 106, third vent valve 111 are simultaneously closed off, while acquiring the first differential pressure transmitter 105, second Pressure transmitter 110, and calculate the leakage rate on both sides, respectively the B chamber of gate valve 4 are to A chamber, C chamber leakage rate.
(8) the first vent valve 106 and third vent valve 111 are opened, release leakage is defeated in test input channel 112, test Gas in pipeline 114 out.
(9) the first vent valve 106 and third vent valve 111 are closed, driving motor 307 rotates forward, so that A, B, C of gate valve 4 Chamber connection, acquires the signal of first pressure transmitter, calculates the B chamber residual compression of gate valve 4, to judge B chamber with the presence or absence of big leakage.
(10) it opens the first test valve 103, second and tests valve 104, the first vent valve 106, the second vent valve 107, third Vent valve 111 is deflated, the first drive magnetic valve 301 of driving, the movement of the second drive magnetic valve 302, so that the first driving cylinder 303, the second driving 304 output shaft of cylinder blocks end cap 305, second respectively away from first and blocks end cap 306, and test terminates.
In summary, the device and method of the embodiment of the present invention can realize the gate valve that separate cavities are formed with double disc The automatic detection of anhydrous external leakage, internal leakage leakproofness is suitable for valve member anhydrous sealing detection automatic production line online, mentions High production efficiency, improves detection accuracy and consistency.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations;Although with reference to the foregoing embodiments Invention is explained in detail, those skilled in the art should understand that: it still can be to aforementioned each implementation Technical solution documented by example is modified or equivalent replacement of some of the technical features;And these modification or Replacement, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.

Claims (6)

1. a kind of anhydrous work seal detection device of gate valve is based on gate valve (4), the gate valve (4) includes that double disc forms three A separate cavities, A chamber, B chamber and C chamber, B chamber are located at centre, handle (401) are arranged on gate valve (4), it is characterised in that: including detection Gas circuit unit blocks unit and detection control unit (2);Wherein,
The detection gas circuit unit includes gas source (101) and intake valve (102), and gas source (101) is connected with intake valve (102) pipe, It further include the first test valve (103) and the second test valve (104), first tests valve (103) one end and intake valve (102) Guan Lian It connects, the other end is connected to test input channel (112), and first pressure transmitter is connected on the test input channel (112) (108);Second test valve (104) one end is connect with intake valve (102) pipe, and the other end connects standard testing pipeline (113), described The delivery outlet sealing blocking of standard testing pipeline (113);
The detection gas circuit unit further includes differential pressure transmitter (105), the first vent valve (106) and the second vent valve (107), poor Pressure transmitter (105) is connect with the first vent valve (106) and the second vent valve (107) pipe respectively, the differential pressure transmitter (105) With the second vent valve (107) respectively with connect standard testing pipeline (113) and be connected to, the differential pressure transmitter (105) and first is put Air valve (106) is also connected to test input channel (112) respectively;
The detection gas circuit unit further includes testing valve (109), second pressure transmitter by the third that pipeline is interconnected (110) and third vent valve (111);
The closure unit includes that the first closure end cap (305) and second block end cap (306), and first blocks end cap (305) The A resonator end surface for carrying out stretching motion and blocking gate valve (4) is controlled by detection control unit (2);Second blocks end cap (306) by detecting Control unit (2) control carries out the C resonator end surface that stretching motion blocks gate valve (4);Described first blocks setting inside end cap (305) Pipeline is connected to the A accent of test input channel (112) and gate valve (4) respectively, and second blocks setting pipeline inside end cap (306) It is connect respectively with the C accent of test output channel (114) and gate valve 4, the test output channel (114) also tests valve with third (109) it is connected to;
The closure unit further includes motor (307), and the delivery outlet of motor (307) is connected to gate valve (4) by connector On handle (401), motor (307) output shaft rotational handle (401) drives the B chamber of gate valve (4) to move up and down, so that gate valve (4) Cut-off or connection;
The detection control unit (2) and intake valve (102), the first test valve (103), the second test valve (104), differential pressure transporting Device (105), the first vent valve (106), the second vent valve (107), first pressure transmitter (108), third test valve (109), Second pressure transmitter (110), third vent valve (111) and motor (307) are electrically connected.
2. the anhydrous work seal detection device of gate valve according to claim 1, it is characterised in that:
Described first, which blocks end cap (305), is fixed on the output shaft of the first driving cylinder (303), and described first blocks end cap (305) the A resonator end surface for carrying out stretching motion and blocking gate valve (4) is driven by the first driving cylinder (303);Second blocks end cap (306) it is fixed on the output shaft of the second driving cylinder (304), second blocks end cap (306) by second driving cylinder (304) band The dynamic C resonator end surface for carrying out stretching motion and blocking gate valve (4);
The closure unit further includes the first drive magnetic valve (301) and the second drive magnetic valve (302), the first driving electromagnetism Valve (301) is connect with first driving cylinder (303) pipe, the second drive magnetic valve (302) and second driving cylinder (304) Guan Lian It connects;
First drive magnetic valve (301) and the second drive magnetic valve (302) are electrically connected with the detection control unit (2) respectively It connects.
3. a kind of anhydrous work seal detection method of gate valve, it is characterised in that:
S1, the starting anhydrous work seal detection device of gate valve, control unit (2) to be detected drive the first drive magnetic valve (301), the second drive magnetic valve (302) acts, so that the first driving cylinder (303), the second driving cylinder (304) output shaft point Not Dai Dong first block end cap (305), second block end cap (306) movement, the A chamber and C resonator end surface of sealing blocking gate valve (4);
S2, intake valve (102), the first vent valve (106), the second vent valve (107), third test valve (109) are closed, opens the One test valve (103), the second test valve (104), third vent valve (111);
S3, control unit to be detected (2) driving motor (307) rotate forward so that A, B, C chamber of gate valve (4) are connected to;
S4, opening (102) intake valve, when detection control unit (2) detection first pressure transmitter (108) reaches setting pressure When, it closes intake valve (102);
S5, after balance a period of time, the first test valve (103), the second test valve (104), detection control unit (2) acquisition are closed The signal of differential pressure transmitter (105), and calculate leakage rate, the as leakage quantity that leaks of gate valve 4.
4. a kind of anhydrous work seal detection method of gate valve as claimed in claim 3, it is characterised in that: the step S5 it Afterwards further include:
S6, driving motor (307) reversion, gate valve (4) cut-off open the first vent valve (106), the so that tri- chamber of A, B, C is isolated Two vent valves (107), third test valve (109), discharge A chamber, C chamber gas;
S7, the first vent valve (106), third vent valve (111) are closed, while acquires the first differential pressure transmitter (105), the second pressure Power transmitter (110), and calculate the leakage rate on both sides, respectively the B chamber of gate valve (4) are to A chamber, C chamber leakage rate.
5. a kind of anhydrous work seal detection method of gate valve as claimed in claim 4, it is characterised in that: the step S7 it Afterwards further include:
S8, the first vent valve (106) and third vent valve (111) are opened, release leakage is in test input channel (112), test Gas in output channel (114);
S9, the first vent valve (106) and third vent valve (111) are closed, driving motor (307) rotates forward, so that the A of gate valve (4), B, C chamber is connected to, and acquires the signal of first pressure transmitter (108), calculates the B chamber residual compression of gate valve (4), to judge that B chamber is It is no to there is big leakage.
6. a kind of anhydrous work seal detection method of gate valve as claimed in claim 5, it is characterised in that: the step S9 it Afterwards further include:
S10, open first test valve (103), second test valve (104), the first vent valve (106), the second vent valve (107) and Third vent valve (111) is deflated, and control unit (2) to be detected drives the first drive magnetic valve (301), the second drive magnetic valve (302) it acts, so that the first driving cylinder (303), the second driving cylinder (304) output shaft block end cap respectively away from first (305), the second closure end cap (306) test terminates.
CN201811334449.6A 2018-11-09 2018-11-09 A kind of anhydrous work seal detection device of gate valve and detection method Pending CN109341984A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811334449.6A CN109341984A (en) 2018-11-09 2018-11-09 A kind of anhydrous work seal detection device of gate valve and detection method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811334449.6A CN109341984A (en) 2018-11-09 2018-11-09 A kind of anhydrous work seal detection device of gate valve and detection method

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112113727A (en) * 2020-09-28 2020-12-22 亚洲硅业(青海)股份有限公司 Valve detection apparatus and valve detection method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112113727A (en) * 2020-09-28 2020-12-22 亚洲硅业(青海)股份有限公司 Valve detection apparatus and valve detection method

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